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Owing to recent advances in thoracic electrical impedance tomography, a patient's hemodynamic function can be noninvasively and continuously estimated in real-time by surveilling a cardiac volume signal associated with stroke volume and…

信号处理 · 电气工程与系统科学 2023-01-05 Chang Min Hyun , Tae Jun Jang , Jeongchan Nam , Hyeuknam Kwon , Kiwan Jeon , Kyunghun Lee

This paper presents a suitable and efficient implementation of a feature extraction algorithm (Pan Tompkins algorithm) on electrocardiography (ECG) signals, for detection and classification of four cardiac diseases: Sleep Apnea, Arrhythmia,…

神经与进化计算 · 计算机科学 2018-02-20 R Karthik , Dhruv Tyagi , Amogh Raut , Soumya Saxena , Rajesh Kumar M

Electrocardiograms (ECGs) are among the most widely used diagnostic tools for cardiovascular diseases, and a large amount of ECG data worldwide appears only in image form. However, most existing automated ECG analysis methods rely on access…

机器学习 · 计算机科学 2026-04-03 Hung Manh Pham , Jialu Tang , Aaqib Saeed , Dong Ma , Bin Zhu , Pan Zhou

Despite extensive standardization, diagnostic interviews for mental health disorders encompass substantial subjective judgment. Previous studies have demonstrated that EEG-based neural measures can function as reliable objective correlates…

Variational autoencoders (VAEs) employ Bayesian inference to interpret sensory inputs, mirroring processes that occur in primate vision across both ventral (Higgins et al., 2021) and dorsal (Vafaii et al., 2023) pathways. Despite their…

机器学习 · 计算机科学 2024-12-10 Hadi Vafaii , Dekel Galor , Jacob L. Yates

Variational autoencoders (VAE) are powerful generative models that learn the latent representations of input data as random variables. Recent studies show that VAE can flexibly learn the complex temporal dynamics of time series and achieve…

机器学习 · 计算机科学 2023-11-14 Borui Cai , Shuiqiao Yang , Longxiang Gao , Yong Xiang

Ejection fraction (EF) is a key indicator of cardiac function, allowing identification of patients prone to heart dysfunctions such as heart failure. EF is estimated from cardiac ultrasound videos known as echocardiograms (echo) by manually…

图像与视频处理 · 电气工程与系统科学 2023-07-25 Masoud Mokhtari , Teresa Tsang , Purang Abolmaesumi , Renjie Liao

Detecting anomalies in electrocardiogram data is crucial to identifying deviations from normal heartbeat patterns and providing timely intervention to at-risk patients. Various AutoEncoder models (AE) have been proposed to tackle the…

Echocardiography is widely used to clinical practice for diagnosis and treatment, e.g., on the common congenital heart defects. The traditional manual manipulation is error-prone due to the staff shortage, excess workload, and less…

计算机视觉与模式识别 · 计算机科学 2022-03-15 Fuhai Chen , Rongrong Ji , Chengpeng Dai , Xuri Ge , Shengchuang Zhang , Xiaojing Ma , Yue Gao

With the recent success of artificial intelligence in neuroscience, a number of deep learning (DL) models were proposed for classification, anomaly detection, and pattern recognition tasks in electroencephalography (EEG). EEG is a…

信号处理 · 电气工程与系统科学 2023-12-05 Giulia Cisotto , Alberto Zancanaro , Italo F. Zoppis , Sara L. Manzoni

The state-of-the-art cardiovascular disease diagnosis techniques use machine-learning algorithms based on feature extraction and classification. In this work, in contrast to a conventional single Electrocardiogram (ECG) lead, two leads are…

信号处理 · 电气工程与系统科学 2023-05-26 Cheng Guo , Sajid Ahmed , Mohamed-Slim Alouini

Climate anomalies significantly impact terrestrial carbon cycle dynamics, necessitating robust methods for detecting and analyzing anomalous behavior in plant productivity. This study presents a novel application of variational autoencoders…

机器学习 · 计算机科学 2025-10-07 Bharat Sharma , Jitendra Kumar

This paper aims to conduct a comparative analysis of contemporary Variational Autoencoder (VAE) architectures employed in anomaly detection, elucidating their performance and behavioral characteristics within this specific task. The…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Huy Hoang Nguyen , Cuong Nhat Nguyen , Xuan Tung Dao , Quoc Trung Duong , Dzung Pham Thi Kim , Minh-Tan Pham

Autoencoders have found widespread application in both their original deterministic form and in their variational formulation (VAEs). In scientific applications and in image processing it is often of interest to consider data that are…

机器学习 · 统计学 2025-09-09 Justin Bunker , Mark Girolami , Hefin Lambley , Andrew M. Stuart , T. J. Sullivan

This study investigates the use of non-linear unsupervised dimensionality reduction techniques to compress a music dataset into a low-dimensional representation which can be used in turn for the synthesis of new sounds. We systematically…

音频与语音处理 · 电气工程与系统科学 2019-05-27 Fanny Roche , Thomas Hueber , Samuel Limier , Laurent Girin

Variational autoencoder (VAE) architectures have the potential to develop reduced-order models (ROMs) for chaotic fluid flows. We propose a method for learning compact and near-orthogonal ROMs using a combination of a $\beta$-VAE and a…

We train an enhanced deep convolutional neural network in order to identify eight cardiac abnormalities from the standard 12-lead electrocardiograms (ECGs) using the dataset of 14000 ECGs. Instead of straightforwardly applying an end-to-end…

信号处理 · 电气工程与系统科学 2019-08-20 Binhang Yuan , Wenhui Xing

In this paper, we focus on a new method of data augmentation to solve the data imbalance problem within imbalanced ECG datasets to improve the robustness and accuracy of heart disease detection. By using Optimal Transport, we augment the…

信号处理 · 电气工程与系统科学 2023-02-20 Jielin Qiu , Jiacheng Zhu , Mengdi Xu , Peide Huang , Michael Rosenberg , Douglas Weber , Emerson Liu , Ding Zhao

An arrhythmia, also known as a dysrhythmia, refers to an irregular heartbeat. There are various types of arrhythmias that can originate from different areas of the heart, resulting in either a rapid, slow, or irregular heartbeat. An…

信号处理 · 电气工程与系统科学 2024-01-12 Taymaz Akan , Sait Alp , Mohammad Alfrad Nobel Bhuiyan

Electrocardiogram (ECG) can be reliably used as a measure to monitor the functionality of the cardiovascular system. Recently, there has been a great attention towards accurate categorization of heartbeats. While there are many…

计算机与社会 · 计算机科学 2018-11-06 Mohammad Kachuee , Shayan Fazeli , Majid Sarrafzadeh
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